WO2014111088A2 - Système fluidique et procédé de commande d'un dispositif de couplage - Google Patents

Système fluidique et procédé de commande d'un dispositif de couplage Download PDF

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Publication number
WO2014111088A2
WO2014111088A2 PCT/DE2014/200003 DE2014200003W WO2014111088A2 WO 2014111088 A2 WO2014111088 A2 WO 2014111088A2 DE 2014200003 W DE2014200003 W DE 2014200003W WO 2014111088 A2 WO2014111088 A2 WO 2014111088A2
Authority
WO
WIPO (PCT)
Prior art keywords
working cylinder
valve
fluidic system
valves
clutch
Prior art date
Application number
PCT/DE2014/200003
Other languages
German (de)
English (en)
Other versions
WO2014111088A3 (fr
Inventor
Bruno MÜLLER
Matthias Ehrlich
Eugen Kombowski
Original Assignee
Schaeffler Technologies Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Priority to CN201480004258.7A priority Critical patent/CN104937302B/zh
Priority to DE112014000470.7T priority patent/DE112014000470A5/de
Publication of WO2014111088A2 publication Critical patent/WO2014111088A2/fr
Publication of WO2014111088A3 publication Critical patent/WO2014111088A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/0206—Control by fluid pressure in a system with a plurality of fluid-actuated clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0221—Valves for clutch control systems; Details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
    • F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
    • F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
    • F16D2048/0245—Electrically driven rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0272—Two valves, where one valve is supplying fluid to the cylinder and the other valve is for draining fluid to the sump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0278—Two valves in series arrangement for controlling supply to actuation cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/51—Relating safety
    • F16D2500/5104—Preventing failures

Definitions

  • the invention relates to a fluidic system and a method for driving a clutch device, with at least one working cylinder, which is actuated for actuating the clutch device via valves.
  • German Laid-Open Application DE 10 2012 202 162 A1 discloses a hydraulic device for actuating a clutch with a hydraulic working cylinder arranged close to the clutch, the working cylinder being connected to a volume flow source via a hydraulic line and the volume flow of the volume flow source being controlled by a control unit is controllable, wherein after a successful pressure build-up in the working cylinder, a poppet valve is closed to close the hydraulic path between the pump and the working cylinder.
  • German patent application DE 102 31 786 A1 discloses a release system for driving a clutch of a vehicle with a slave cylinder and a master cylinder in a transmission path is known, wherein a mechanical actuation, a first valve and a second valve are provided.
  • a seat valve As a pressure valve, a seat valve can be used. From the German Patent DE 31 05 239 C2 an actuator for hydraulically opening a closed by spring force coupling with a pressure control valve and a pressure accumulator is known, which is connected via a designed as a seat valve check valve to a branch line.
  • the object of the invention is to provide a fluidic system or a method for driving a clutch device according to the preamble of claim 1 or 7, which is inexpensive to produce and / or can be operated with low losses.
  • the problem is solved in a fluidic system for driving a coupling device, with at least one working cylinder which is actuated for actuating the coupling device via valves, characterized in that the working cylinder, an inlet valve and an outlet valve are assigned, both of which are designed as low-leakage or leak-free valves ,
  • the inlet valve is connected between an outlet of a volumetric flow source and the working cylinder.
  • the exhaust valve is connected between the working cylinder and a fluid reservoir, for example a hydraulic medium tank.
  • the low-leakage or leak-free Valves may be designed as slide valves, ball check valves and the like.
  • the leaking or leak-free valves are advantageously designed as a simple seat valves.
  • the use of simple poppet valves provides manufacturing cost advantages over poppet valves.
  • the poppet valves advantageously have only two states, namely an open and a closed state. In the closed state of the seat valves, the leakage is significantly reduced compared to slide valves.
  • the fluidic system is preferably a hydraulic system which is operated with a hydraulic medium, such as hydraulic oil.
  • a preferred embodiment of the fluidic system is characterized in that the coupling device is designed as a double clutch with two clutches, which are each assigned an inlet valve and an outlet valve, which are both designed as low-leakage or leak-free valves.
  • the coupling device is designed as a double clutch with two clutches, which are each assigned an inlet valve and an outlet valve, which are both designed as low-leakage or leak-free valves.
  • a further preferred embodiment of the fluidic system is characterized in that the leaking or leak-free valves are designed as 2/2-way valves.
  • the leaking or leak-free valves advantageously each have only one closed position and one open position. In the closed position, a connection to the working cylinder is interrupted. In the open position, the working cylinder is connected to the volumetric flow source in relation to the inlet valve and to a fluid reservoir in relation to the outlet valve.
  • the control of the low-leakage or leak-free valves is carried out, for example, electrically or electromagnetically.
  • Another preferred embodiment of the fluidic system is characterized in that the working cylinder is designed as a single-acting slave cylinder. The slave cylinder interacts with a master cylinder in a hydraulic clutch actuation system.
  • a further preferred embodiment of the fluidic system is characterized in that the or the working cylinder is connected with the interposition of the intake valve associated with the working cylinder with an output of a preferably electric motor driven hydraulic pump or are.
  • the inventive arrangement of the leackage poor or leak-free valves, in particular the simple seat valves, for example, over a hydrostatic clutch actuator, an electric motor can be saved.
  • a further preferred embodiment of the fluidic system is characterized in that the working cylinders are connected on the output side by a connecting line, in which a bypass valve is arranged, which is preferably also designed as a low-leakage or leak-free valve, in particular as a seat valve.
  • the bypass valve is designed as a 2/2-way valve with an open position and a closed position. In the open position, the two working cylinders are hydraulically connected via the connecting line. In the closed position, the connection between the two working cylinders is interrupted.
  • the bypass valve can also be referred to as a crosh-talk valve, which can bring the two cylinders specifically in defined time intervals, also pulsed, hydraulically connected to each other.
  • the above-mentioned object is alternatively or additionally achieved by opening the intake valve and closing the exhaust valve associated with the same working cylinder in order to increase a working pressure in this working cylinder.
  • a clutch which is biased by a spring in its open position, be closed. If the clutch is to be opened, the intake valve is closed and the exhaust valve is opened.
  • a preferred embodiment of the method is characterized in that the exhaust valve is opened by high-frequency pulses to the working pressure in the Ar- Dose lowered working cylinder.
  • a brief opening and closing of the valves is also referred to as pulses.
  • the opening of the clutch can advantageously take place independently of the volume flow source, in particular the hydraulic pump, but nevertheless controlled.
  • the independent of the volumetric flow source, in particular hydraulic pump, opening the clutch only by the valve control allows in a dual clutch with only one volume flow source, in particular pump, an overlap of the clutches. While one of the clutches is opened controlled by the pulses of the associated exhaust valve, the second clutch can be closed controlled by the volume flow source, in particular pump.
  • a further preferred embodiment of the method is characterized in that a part of the operating pressure prevailing in the working cylinder of an actuated clutch is diverted via a bypass valve into the working cylinder of an unactuated clutch.
  • the invention further relates to a dual clutch with a previously described fluidic system, which is driven in particular according to a method described above.
  • FIG. 1 shows an embodiment of the invention in the form of a simplified fluid circuit diagram
  • Figure 2 is a similar fluid circuit diagram as in Figure 1 with an additional connecting line with a bypass valve.
  • a fluidic system 1; 71 illustrated in accordance with two embodiments of the invention. To denote the same parts, the same reference numerals are used. In the following, the similarities between the two exemplary embodiments will first be described. Thereafter, the differences between the two embodiments will be explained.
  • the fluidic system 1; 71 includes a hydraulic pump 4 and a hydraulic medium reservoir, which is indicated by tank symbols 5, 6, 7.
  • the hydraulic pump 4 can be sucked via a check valve 8 hydraulic medium and pressurized.
  • the hydraulic pump 4 is driven by an electric motor 10.
  • the drive of the hydraulic pump 4 may alternatively or additionally also by an internal combustion engine or by at least one auxiliary unit, such as a starter, take place.
  • a first connecting line 1 1 and a second connecting line 12 are connected to an output of the hydraulic pump 4. Via the first connecting line 1 1, a first working cylinder 21 is connected to the hydraulic pump 4. Via the second connecting line 12, a second working cylinder 22 is connected to the hydraulic pump 4.
  • the two working cylinders 21, 22 are designed as simple slave cylinder.
  • the first working cylinder 21 is used to actuate a first clutch 31, which is indicated only by a spring and shown in its actuated by the working cylinder 21 state.
  • the working cylinder 22 is associated with a second clutch 32, which is in its unactuated by the second working cylinder state, that is, in its open position shown.
  • the two clutches 31, 32 represent partial clutches of a double clutch.
  • the first clutch 31 is assigned a first intake valve 41 and a first exhaust valve 51.
  • the second clutch 32 is associated with a second intake valve 42 and a second exhaust valve 52.
  • the valves 41, 42 and 51, 52 are advantageously designed as simple seat valves.
  • a first branch 61 is arranged between the first inlet valve 41 and the first working cylinder 21, a first branch 61 is arranged. Between the second inlet valve 42 and the second working cylinder 22, a second branch 62 is arranged.
  • the exhaust valves 51; 52 are each between the branch 61; 62 and the fluid reservoir 5; 7 arranged. If one of the working cylinders 21, 22 is to be actuated, then the associated outlet valve 51, 52 is closed and the associated inlet valve 41, 42 is opened. If the clutch 31, 32 are to be opened, the associated inlet valve 41, 42 is closed and the associated outlet valve 51, 52 is opened.
  • the exhaust valves 51, 52 can reduce the pressure in the respective working cylinder 21, 22 by briefly opening and closing.
  • the independent of the hydraulic pump opening of the respective clutch 31, 32 only by the valve control allows the dual clutch overlap of the two clutches 31, 32 with only a single hydraulic pump. 4
  • the short-term opening and closing of the valve is also referred to as pulses.
  • the fluidic system 71 shown in FIG. 2 differs from the fluidic system 1 illustrated in FIG. 1 in that the two branches 61, 62 are hydraulically connected to one another by a connecting line 75.
  • a bypass valve 76 is arranged in the connecting line 75.
  • the bypass valve 76 makes it possible not directly discharge a part of the operating pressure prevailing in the actuated working cylinder 21 in the tank 5, but to redirect via the open bypass valve 76 in the unactuated working cylinder 22.
  • the existing in the working cylinder 21 hydraulic energy can be used to pressurize the working cylinder 22.
  • the associated energy recovery improves the overall efficiency of the fluidic system 71.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne un système fluidique destiné à la commande d'un dispositif de couplage et comprenant au moins un vérin commandé pour actionner le dispositif de couplage par l'intermédiaire de soupapes. L'invention est caractérisée en ce qu'au vérin sont associées une soupape d'admission et une soupape d'échappement qui sont toutes deux des soupapes présentant peu ou pas de fuites.
PCT/DE2014/200003 2013-01-18 2014-01-17 Système fluidique et procédé de commande d'un dispositif de couplage WO2014111088A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480004258.7A CN104937302B (zh) 2013-01-18 2014-01-17 用于驱控离合器装置的流体系统和方法
DE112014000470.7T DE112014000470A5 (de) 2013-01-18 2014-01-17 Fluidisches System und Verfahren zum Ansteuern einer Kupplungseinrichtung

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013207839.0 2013-01-18
DE102013200813 2013-01-18
DE102013200813.9 2013-04-29
DE102013207839 2013-04-29

Publications (2)

Publication Number Publication Date
WO2014111088A2 true WO2014111088A2 (fr) 2014-07-24
WO2014111088A3 WO2014111088A3 (fr) 2015-01-22

Family

ID=50137462

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200003 WO2014111088A2 (fr) 2013-01-18 2014-01-17 Système fluidique et procédé de commande d'un dispositif de couplage

Country Status (3)

Country Link
CN (1) CN104937302B (fr)
DE (2) DE102014200754A1 (fr)
WO (1) WO2014111088A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016112152A1 (de) * 2016-07-04 2018-01-04 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Betreiben einer Kupplung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093143A (en) * 1981-02-13 1982-08-25 Zahnradfabrik Friedrichshafen Hydraulic actuation of a clutch
US5787790A (en) * 1995-01-05 1998-08-04 Automotive Produscts, Plc Actuator with an overflow chamber and means for returning the fluid from the overflow chamber during a reverse stroke
FR2762880A1 (fr) * 1997-04-30 1998-11-06 Hydrokit Valve de commande automatique de l'embrayage d'un vehicule dans le domaine agricole ou des travaux publics
US20120103751A1 (en) * 2010-11-02 2012-05-03 Aisin Seiki Kabushiki Kaisha Drive system for vehicle
DE102011075168A1 (de) * 2011-05-03 2012-11-08 Zf Friedrichshafen Ag Verfahren zum Erkennen und Berücksichtigen einer Leckage in der Stellvorrichtung einer druckmittelbetätigten Kupplung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572689B1 (fr) * 1984-11-07 1989-09-15 Renault Dispositif d'automatisation d'embrayage
DE10293171D2 (de) 2001-07-19 2004-07-01 Luk Lamellen & Kupplungsbau Ausrücksystem zur Betätigung einer Kupplung eines Fahrzeuges
DE602005016371D1 (de) * 2005-04-25 2009-10-15 Hoerbiger & Co Betätigungssteuereinrichtung für die Lamellen einer hydraulischen Doppelkupplung
KR20140010046A (ko) 2011-02-23 2014-01-23 섀플러 테크놀로지스 아게 운트 코. 카게 클러치의 작동을 위한 유압 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093143A (en) * 1981-02-13 1982-08-25 Zahnradfabrik Friedrichshafen Hydraulic actuation of a clutch
US5787790A (en) * 1995-01-05 1998-08-04 Automotive Produscts, Plc Actuator with an overflow chamber and means for returning the fluid from the overflow chamber during a reverse stroke
FR2762880A1 (fr) * 1997-04-30 1998-11-06 Hydrokit Valve de commande automatique de l'embrayage d'un vehicule dans le domaine agricole ou des travaux publics
US20120103751A1 (en) * 2010-11-02 2012-05-03 Aisin Seiki Kabushiki Kaisha Drive system for vehicle
DE102011075168A1 (de) * 2011-05-03 2012-11-08 Zf Friedrichshafen Ag Verfahren zum Erkennen und Berücksichtigen einer Leckage in der Stellvorrichtung einer druckmittelbetätigten Kupplung

Also Published As

Publication number Publication date
DE102014200754A1 (de) 2014-07-24
CN104937302A (zh) 2015-09-23
DE112014000470A5 (de) 2015-09-24
CN104937302B (zh) 2018-04-13
WO2014111088A3 (fr) 2015-01-22

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